RADIAN AND DEGREE MEASURE4-1

ANGLESThinking about angles differently:

Rotating a ray to create an angleInitial side - where we startTerminal side - where we stop

ANGLESStandard Position- the initial side is on the positive side of the x axis with the vertex on the origin

Positive angle – rotate counterclockwiseNegative angle – rotate clockwise

ANGLESCoterminal angles - angles are coterminal when there terminal ray is in the same position.

Radian measure – Radians are a ratio of arc length to radius. One radian is when the arc length is equal to the radius.

ANGLESComplete revolution is radians

ANGLES

SKETCHING ANGLESSketch in standard position

SKETCHING ANGLESSketch in standard position

Compare to the last graph

SKETCHING ANGLESSketch in standard position

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